Proper Attic Insulation And Ventilation

Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents.

Proper attic insulation and ventilation.

By using proper attic insulation and a radiant barrier you can deflect up to 97 percent of the sun s rays. The main purpose of attic and roof ventilation is to expel solar heated hot air from the attic to lessen your home s cooling load. Air flows in through the soffit vents and out through the roof vents. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca.

In the last several decades building codes have called for increased attic insulation. It may be a bit odd to just add insulation for warmth and then just allow cold air to get into your. If you see dampness or frost you need better roof ventilation and some attic vents. Doing the job yourself.

At first it may seem odd to add insulation for warmth and then purposely allow cold air to. A radiant barrier is a high performance product that comes in a foil or spray insulation. To prevent this follow the air sealing and insulation strategies in this guide and make sure the attic is well ventilated using passive vents and natural airflow. Proper attic ventilation natural ventilation.

You can also contact your local municipality to check on building code in your area. Grab a flashlight and inspect your attic during the winter. Most building codes require a ratio of 1 150 ventilation space to attic floor space. An attic fan is used to cool down a hot attic by taking in cooler air from outside through attic vents.

There are also dissenting voices who say that the benefits of ventilation are overrated. For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.